/*
 * Copyright (c) 2015, Hasso-Plattner-Institut.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 *
 */

/**
 * \file
 *         Publish-Subscribe 802.15.4 MAC commmand frames.
 * \author
 *         Konrad Krentz <konrad.krentz@gmail.com>
 */

#include "net/cmd-broker.h"
#include "lib/list.h"
#include "net/packetbuf.h"

LIST(subscriptions_list);

/*---------------------------------------------------------------------------*/
void
cmd_broker_subscribe(struct cmd_broker_subscription *subscription)
{
  list_add(subscriptions_list, subscription);
}
/*---------------------------------------------------------------------------*/
void
cmd_broker_unsubscribe(struct cmd_broker_subscription *subscription)
{
  list_remove(subscriptions_list, subscription);
}
/*---------------------------------------------------------------------------*/
enum cmd_broker_result
cmd_broker_publish(void)
{
  enum cmd_broker_result result;
  struct cmd_broker_subscription *subscription;
  uint8_t *payload;

  payload = (uint8_t *)packetbuf_dataptr();

  subscription = list_head(subscriptions_list);
  while(subscription) {
    if(((result = subscription->on_command(payload[0], payload + 1)))) {
      return result;
    }
    subscription = list_item_next(subscription);
  }
  return CMD_BROKER_UNCONSUMED;
}
/*---------------------------------------------------------------------------*/
void
cmd_broker_init(void)
{
  list_init(subscriptions_list);
}
/*---------------------------------------------------------------------------*/
